I recently installed a DVD-RW and a usb hdd. I tried to play a .mpeg in wmp10 and get audio, but no video. I had the same results with realplayer and quicktime. Also tried to play .avi's with the same result. I've tried rolling back the WMP, same results. I uninstalled all the new software I installed and ran regclean. I'm currently running Avast! to see if there's any viruses I missed. Has anyone else had this problem? There's nothing about it on the Microsoft web site and didn't have any luck googling this problem. I do have one jap anime cartoon that runs. It's a .mpeg, and is the only one that works.